Effect of different oxide layer shares on the upsetting of titanium aluminide specimens

verfasst von: Sebastian Döring, Julius Peddinghaus, Kai Brunotte, Bernd Arno Behrens
Abstract: By ball milling in a low-oxygen atmosphere, it was possible to show that titanium aluminides (TiAl) can be processed into components by pressing and sintering in the same atmosphere. The properties (e.g. hardness and density) that can be realised with established processes such as field-assisted sintering (FAST) or hot isostatic pressing (HIP) were not achieved. Pores in the component are closed by forming processes, which improves the mechanical properties. In this work, powder-metallurgically processed TiAl was hot-formed in a low-oxygen atmosphere. The forging parameters and pre-consolidation were characterised with regard to their effect on the component properties. Force, hardness and porosity measurements as well as metallographic analyses were used to evaluate the process and the resulting specimens. It was found that a pre-consolidation and a higher degree of deformation lead to a lower porosity and a higher hardness.
Organisationseinheit(en): Institut für Umformtechnik und Umformmaschinen
Typ: Aufsatz in Konferenzband
Seiten: 958-967
Anzahl der Seiten: 10
Publikationsdatum: 2024
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Materialwissenschaften
Elektronische Version(en): https://doi.org/10.21741/9781644903131-105 (Zugang: Geschlossen)

BibTeX

@inproceedings{79132e213925415faab9b83f42f75c0a,
title = "Effect of different oxide layer shares on the upsetting of titanium aluminide specimens",
abstract = "By ball milling in a low-oxygen atmosphere, it was possible to show that titanium aluminides (TiAl) can be processed into components by pressing and sintering in the same atmosphere. The properties (e.g. hardness and density) that can be realised with established processes such as field-assisted sintering (FAST) or hot isostatic pressing (HIP) were not achieved. Pores in the component are closed by forming processes, which improves the mechanical properties. In this work, powder-metallurgically processed TiAl was hot-formed in a low-oxygen atmosphere. The forging parameters and pre-consolidation were characterised with regard to their effect on the component properties. Force, hardness and porosity measurements as well as metallographic analyses were used to evaluate the process and the resulting specimens. It was found that a pre-consolidation and a higher degree of deformation lead to a lower porosity and a higher hardness.",
keywords = "Hot Forming, Lightweight Materials, Powder Metallurgy",
author = "Sebastian D{\"o}ring and Julius Peddinghaus and Kai Brunotte and Behrens, {Bernd Arno}",
note = "Publisher Copyright: {\textcopyright} 2024, Association of American Publishers. All rights reserved.; 27th International ESAFORM Conference on Material Forming, ESAFORM 2024 ; Conference date: 24-04-2024 Through 26-04-2024",
year = "2024",
doi = "10.21741/9781644903131-105",
language = "English",
isbn = "9781644903131",
series = "Materials Research Proceedings",
publisher = "Association of American Publishers",
pages = "958--967",
editor = "Araujo, {Anna Carla} and Arthur Cantarel and France Chabert and Adrian Korycki and Philippe Olivier and Fabrice Schmidt",
booktitle = "Material Forming, ESAFORM 2024",
}